22225447 has 2 divisors, whose sum is σ = 22225448. Its totient is φ = 22225446.

The previous prime is 22225439. The next prime is 22225451. The reversal of 22225447 is 74452222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22225447 - 2³ = 22225439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22225417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11112723 + 11112724.

It is an arithmetic number, because the mean of its divisors is an integer number (11112724).

Almost surely, 2^22225447 is an apocalyptic number.

22225447 is a deficient number, since it is larger than the sum of its proper divisors (1).

22225447 is an equidigital number, since it uses as much as digits as its factorization.

22225447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8960, while the sum is 28.

The square root of 22225447 is about 4714.3872348376. The cubic root of 22225447 is about 281.1578205241.

Adding to 22225447 its reverse (74452222), we get a palindrome (96677669).

The spelling of 22225447 in words is "twenty-two million, two hundred twenty-five thousand, four hundred forty-seven".